Municipal water supply and drainage dredging device

Abstract

The utility model relates to the field of municipal engineering equipment, and discloses a municipal water supply and drainage desilting device which comprises a supporting frame. The walking wheel sets are distributed on the supporting frame in a circumferential array mode; the power assembly is installed on the supporting frame, the output end of the power assembly is connected with a plurality of telescopic rods, the telescopic rods are located on the peripheral side of the supporting frame, the ends, away from the supporting frame, of the telescopic rods are fixedly connected with the desilting assemblies one by one, the power assembly is used for driving the telescopic rods to do circular motion around the supporting frame, and the desilting assemblies are used for desilting the inner wall of the pipeline; the control unit is electrically connected with the walking wheel set and the power assembly. And the power supply is electrically connected with the control unit. In the using process, a worker places the device in a pipeline, the control unit controls the walking wheel set to operate so that the device can move in the pipeline, the power assembly drives the telescopic rod to rotate, the telescopic rod drives the desilting assembly to clean the inner wall of the pipeline, and the desilting process of an existing installation pipeline is achieved.

Description

Technical Field

[0001] The utility model relates to the field of municipal engineering equipment, in particular to a municipal water supply and drainage dredging device. Background Art

[0002] With the acceleration of the urbanization process, the maintenance and management of the municipal water supply and drainage system become particularly important.

[0003] The patent with the publication number of CN218264271U discloses a dredging device for municipal underground water supply and drainage pipelines. The output end of the double-shaft motor in this patent can drive the threaded rod to rotate bidirectionally on the inner wall of the threaded cylinder through the telescopic rod, so that the telescopic rod extends or shortens, and then the convex side of the arc-shaped dredging plate is abutted against the inner wall of the municipal underground water supply and drainage pipeline, which can adapt to municipal underground water supply and drainage pipelines with different diameters and make the dredging process more convenient. However, taking the installed rain and sewage pipelines as an example, the distance between the rain and sewage pipelines between adjacent inspection wells is usually about 40m - 50m. There are a large number of toxic and harmful gases in the pipeline, and it is difficult to realize pipeline dredging by means of manually pushing the device, and the feasibility is relatively low.

[0004] In view of this, how to realize the dredging process of the installed pipelines has become a technical problem that needs to be solved urgently by those skilled in the art. Content of the Utility Model

[0005] The utility model aims to provide a municipal water supply and drainage dredging device to overcome the above deficiencies.

[0006] In order to achieve the above purpose, the technical solution of the utility model is as follows:

[0007] A municipal water supply and drainage dredging device includes:

[0008] A support frame;

[0009] A plurality of walking wheel groups arranged in a circumferential array on the support frame;

[0010] A power assembly installed on the support frame. The output end of the power assembly is connected with a plurality of telescopic rods. The telescopic rods are located on the circumferential side of the support frame, and one end of the telescopic rod far away from the support frame is fixedly connected with a dredging assembly respectively. The power assembly is used to drive the telescopic rod to make a circular motion around the support frame, and the dredging assembly is used to dredge the inner wall of the pipeline;

[0011] A control unit electrically connected to the walking wheel group and the power assembly respectively; and

[0012] A power supply electrically connected to the control unit.

[0013] Further, the telescopic rod includes:

[0014] A first fixing rod fixedly connected to the output end of the power assembly;

[0015] A first movable rod slidably inserted into the first fixing rod, and a dredging assembly is fixedly connected to the end of the first movable rod away from the first fixing rod;

[0016] And an elastic member with two ends respectively connected to the first fixing rod and the first movable rod, and the elastic member is used to drive the first fixing rod and the first movable rod to move away from each other.

[0017] Further, a first blind hole is provided at the end of the first fixing rod away from the power assembly, and a first sliding groove is arranged on its side wall. The first sliding groove is arranged along the length direction of the first fixing rod, and the first sliding groove is communicated with the first blind hole;

[0018] One end of the first movable rod close to the power assembly is slidably connected to the first blind hole, and a first sliding rod is vertically and fixedly connected thereto. The first sliding rod is slidably connected to the first sliding groove;

[0019] The elastic member is a first compression spring, and the first compression spring is arranged in the first blind hole and is used to drive the first movable rod to slide towards the end away from the power assembly.

[0020] Further, a movable plate is slidably connected in the first blind hole, and the movable plate and the first movable rod are respectively connected to two ends of the first compression spring;

[0021] There are two first sliding grooves. Two ends of the movable plate respectively extend in opposite directions and respectively penetrate through the two first sliding grooves to form two protruding parts. Two fixing plates are fixedly connected to the side wall of the first fixing rod. The two fixing plates are located on the side of the first sliding groove away from the first movable rod, and the two fixing plates and the two protruding parts are arranged in one-to-one correspondence. One end of the protruding part close to the fixing plate is fixedly connected to the head of a bolt, and the rod part of the bolt penetrates through the fixing plate and is connected with two first nuts. The two first nuts are respectively located on both sides of the fixing plate.

[0022] Further, the dredging assembly includes:

[0023] A dredging plate fixedly connected to the end of the first movable rod away from the assembly, and the end face of the dredging plate away from the first movable rod is an arc surface; and

[0024] A cleaning brush fixedly connected to the arc surface.

[0025] Further, the power assembly includes:

[0026] a drive motor fixedly connected to one end of the support frame, wherein the drive motor is electrically connected to a control unit; and

[0027] A planetary gear, comprising a sun gear, a ring gear and a planet carrier, wherein the sun gear is connected to the output shaft of the drive motor in a power connection, the circumference of the ring gear is fixedly connected to the first fixing rod, the planet carrier is equipped with planetary gears, and the planetary gears are respectively meshed with the sun gear and the ring gear;

[0028] One end of the support frame is fixedly connected to a protective shell via a connecting column, and the protective shell is fixedly connected to the planet carrier.

[0029] Furthermore, it also includes: a camera is installed on the protective shell, and the camera is electrically connected to the control unit.

[0030] Furthermore, the walking wheel set comprises:

[0031] A walking bracket, one end of which is connected to the outer side wall of the support frame, and the other end of which is rotatably connected to a plurality of walking wheels, wherein the walking wheels are used for friction connection with the inner wall of the pipeline; and

[0032] A travel motor is used to drive the travel wheel to rotate, and the travel motor is electrically connected to the control unit.

[0033] Furthermore, the walking support comprises:

[0034] Two groups of first connecting rods are spaced apart and arranged in parallel along the length direction of the support frame, one end of the first connecting rod is hinged with a fixing block, and the fixing block is fixedly connected to the outer side wall of the support frame;

[0035] A second connecting rod is arranged crosswise with the first connecting rod, one end of the second connecting rod is hinged with a sliding ring, and the sliding ring is slidably connected with the support frame along the length direction of the support frame;

[0036] A mounting seat hinged to the other end of the first connecting rod and the other end of the second connecting rod respectively, a plurality of travel wheels are rotatably connected to the mounting seat, the travel motor is fixedly connected to the mounting seat, and the travel motor is drivingly connected to at least one of the travel wheels;

[0037] And a driving member for driving the sliding ring and the fixed plate to move closer to or away from each other.

[0038] Furthermore, the second connecting rod comprises:

[0039] A second fixing rod hinged to the mounting base at one end, with a second blind hole provided at the other end of the second fixing rod, and a second sliding groove arranged on the side wall, the second sliding groove being arranged along the length direction of the second fixing rod, and the second sliding groove communicating with the second blind hole;

[0040] A third fixing rod hinged to the sliding ring at one end, a sliding rod fixedly connected to the other end of the third fixing rod, the sliding rod being slidably connected to the second blind hole, and a second sliding rod perpendicularly fixedly connected to the end of the sliding rod away from the third fixing rod, the second sliding rod being slidably connected to the second sliding groove;

[0041] A second compression spring sleeved on the periphery of the sliding rod, with both ends of the second compression spring connected to the other end of the second fixing rod and the other end of the third fixing rod respectively;

[0042] The driving member includes: a screw rod fixedly connected to the fixed seat at one end, and a second nut threadedly connected to the other end of the screw rod after passing through the sliding ring.

[0043] The present utility model has at least the following advantages compared with the prior art:

[0044] During use, the staff places the device in the pipeline, the control unit controls the operation of the walking wheel set to enable the device to move in the pipeline, the power assembly drives the telescopic rod to rotate, and the telescopic rod drives the dredging assembly to clean the inner wall of the pipeline, so as to realize the dredging process of the existing installed pipeline. During use, the participation of personnel in the activities inside the pipeline is reduced, and the occurrence of safety accidents is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model, and for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0046] Figure 1 It is a schematic diagram of the overall structure of the municipal water supply and drainage dredging device of the present utility model;

[0047] Figure 2 For the present utility model Figure 1 Partial enlarged view of area A;

[0048] Figure 3 For the present utility model Figure 1 Partial enlarged view of area B;

[0049] Figure 4 It is a cross-sectional view of the municipal water supply and drainage dredging device of the present utility model;

[0050] Figure 5 This is a cross-sectional view of another perspective of the municipal water supply and drainage dredging device of the present utility model.

[0051] Reference numerals: 1, support frame; 2, first fixing rod; 3, first movable rod; 4, first blind hole; 5, first chute; 6, first sliding rod; 7, first compression spring; 8, movable plate; 9, fixing plate; 10, bolt; 11, first nut; 12, dredging plate; 13, cleaning brush; 14, driving motor; 15, sun gear; 16, ring gear; 17, planet carrier; 18, planet gear; 19, protective shell; 20, camera; 21, traveling wheel; 22, traveling motor; 23, first connecting rod; 24, fixing block; 25, second connecting rod; 26, sliding ring; 27, mounting seat; 28, second fixing rod; 29, second blind hole; 30, second chute; 31, third fixing rod; 32, sliding rod; 33, second sliding rod; 34, screw; 35, second nut; 36, connecting column; 37, second compression spring; 38, safety ring. Detailed implementation manners

[0052] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0053] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the present utility model will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners.

[0054] Referring to Figures 1-5 , the present utility model provides a municipal water supply and drainage dredging device, which is applicable to the dredging of existing installed municipal water supply and drainage pipes, especially applicable to the dredging of drainage pipes. The specific structure includes a support frame 1, a traveling wheel set, a power assembly, a telescopic rod, a dredging assembly, a control unit, and a power supply.

[0055] Among them, a plurality of traveling wheel sets are distributed on the support frame 1, and they are arranged in a circumferential array. The traveling wheel set is connected to the support frame 1 and can realize movement inside the pipe. The power assembly is installed on the support frame 1, and its output end is connected with a plurality of telescopic rods. These telescopic rods are located on the circumference side of the support frame 1, and the end far from the support frame 1 is fixedly connected to the dredging assembly. The function of the power assembly is to drive the telescopic rods to make a circular motion around the support frame 1, while the dredging assembly is responsible for cleaning the inner wall of the pipe. The control unit is electrically connected to the traveling wheel set and the power assembly respectively and can control their working states. The power supply is electrically connected to the control unit to provide the required electric energy.

[0056] In a specific embodiment of the present utility model, the control unit adopts a PLC device (not shown in the figure), which is built-in with a wireless communication unit and can transmit control status information to the upper computer. The user can also use the upper computer to send operation instructions to the control unit to control the operation of the walking wheel set and the power component. The power supply adopts a storage battery (not shown in the figure), and the storage battery is built inside the operation frame.

[0057] During actual use, the control unit controls the operation of the walking wheel set to realize the movement of the device inside the pipeline. The power component drives the telescopic rod to rotate, and the telescopic rod drives the dredging component to clean the inner wall of the pipeline to realize the dredging process.

[0058] The telescopic rod includes a first fixed rod 2, a first movable rod 3 and an elastic member. The first fixed rod 2 is fixedly connected to the output end of the power component. The first movable rod 3 is slidably inserted into the first fixed rod 2, and the end away from the first fixed rod 2 is fixedly connected to the dredging component. Both ends of the elastic member are respectively connected to the first fixed rod 2 and the first movable rod 3 and are used to drive the two to move away from each other.

[0059] Specifically, a first blind hole 4 is provided at the end of the first fixed rod 2 away from the power component. The side wall of the first blind hole 4 is provided with a first chute 5. The first chute 5 is arranged along the length direction of the first fixed rod 2, and the first chute 5 is communicated with the first blind hole 4. One end of the first movable rod 3 close to the power component is slidably connected to the first blind hole 4 and is perpendicularly and fixedly connected with a first sliding rod 6. The first sliding rod 6 is slidably connected to the first chute 5. The elastic member is a first compression spring 7. The first compression spring 7 is arranged in the first blind hole 4 and is used to drive the first movable rod 3 to slide towards the end away from the power component. With the above design, under the action of the first compression spring 7, the dredging component can better fit the inner wall of the pipeline to improve the cleaning ability of the device.

[0060] Optionally, a movable plate 8 is slidably connected in the first blind hole 4. The movable plate 8 and the first movable rod 3 are respectively connected to both ends of the first compression spring 7. There are two first chutes 5. Both ends of the movable plate 8 extend in opposite directions and respectively penetrate through the two first chutes 5 to form two protruding parts. Two fixing plates 9 are fixedly connected to the side wall of the first fixed rod 2. The two fixing plates 9 are located on the side of the first chute 5 away from the first movable rod 3, and the two fixing plates 9 and the two protruding parts are arranged in one-to-one correspondence. One end of the protruding part close to the fixing plate 9 is fixedly connected to the head of a bolt 10. The rod part of the bolt 10 penetrates through the fixing plate 9 and is connected with two first nuts 11. The two first nuts 11 are respectively located on both sides of the fixing plate 9.

[0061] When the length of the first compression spring 7 in the uncompressed state is less than the length of the first sliding groove 5, by adjusting the position of the first nut 11 on the bolt 10, the position of the movable plate 8 in the first blind hole 4 can be adjusted, the sliding position of the first movable rod 3 in the first blind hole 4 can be adjusted, and when the dredging assembly is in contact with the inner wall of the pipeline, by adjusting the position of the first nut 11 on the bolt 10, the elastic force between the first compression spring 7 and the first movable rod 3 can be adjusted. Through the above operations, the adjustment process of the total length of the first fixed rod 2 and the first movable rod 3 can be realized, and the fitting force between the dredging assembly and the inner wall of the pipeline can also be adjusted, so as to be applicable to the dredging process of pipelines with different diameters.

[0062] The dredging assembly includes a dredging plate 12 and a cleaning brush 13. The dredging plate 12 is fixedly connected to the end of the first movable rod 3 away from the assembly, and the end face away from the first movable rod 3 is an arc surface. The cleaning brush 13 is fixedly connected to the arc surface.

[0063] The power assembly includes a driving motor 14 and a planetary gear 18. The driving motor 14 is fixedly connected to one end of the support frame 1 and is electrically connected to the control unit. The planetary gear 18 includes a sun gear 15, a ring gear 16 and a planet carrier 17. The sun gear 15 is power-connected to the output shaft of the driving motor 14. The periphery of the ring gear 16 is fixedly connected to the first fixed rod 2. The planet carrier 17 is provided with planetary gears 18, and the planetary gears 18 are respectively meshed with the sun gear 15 and the ring gear 16. The protective shell 19 is fixedly connected to one end of the support frame 1 through a connecting column 36 and is fixedly connected to the planet carrier 17.

[0064] In addition, a camera 20 is also installed on the protective shell 19. The camera 20 is electrically connected to the control unit. The camera 20 transmits the captured video images to the control unit and sends them to the host computer through the communication module, enabling the operator to timely understand the dredging situation in the pipeline. In order to avoid the situation that the device cannot be taken out of the pipeline due to sudden power failure of the power supply or the like, a safety ring 38 is fixedly installed at the other end of the support frame 1 of the present utility model. Before use, first connect a safety rope to the installation ring, and then place the dredging device of the present utility model in the pipeline for dredging work. When a sudden situation such as power failure occurs, the user can pull the device out of the pipeline through the safety rope.

[0065] The traveling wheel set includes a traveling support and a traveling motor 22. One end of the traveling support is connected to the outer side wall of the support frame 1, and the other end is rotatably connected with a plurality of traveling wheels 21. The traveling wheels 21 are used for friction connection with the inner wall of the pipeline. The traveling motor 22 is used to drive the traveling wheels 21 to rotate and is electrically connected to the control unit.

[0066] Preferably, the walking support includes: two groups of first connecting rods 23 arranged at intervals and in parallel along the length direction of the support frame 1. One end of each first connecting rod 23 is hinged with a fixing block 24, and the fixing block 24 is fixedly connected to the outer side wall of the support frame 1; a second connecting rod 25 arranged crosswise to the first connecting rod 23. One end of the second connecting rod 25 is hinged with a sliding ring 26, and the sliding ring 26 is slidably connected to the support frame 1 along the length direction of the support frame 1; a mounting seat 27 hinged to the other ends of the first connecting rod 23 and the second connecting rod 25 respectively. A plurality of walking wheels 21 are rotatably connected to the mounting seat 27, and a walking motor 22 is fixedly connected to the mounting seat 27, and the walking motor 22 is drivingly connected to at least one of the walking wheels 21; and a driving member for driving the sliding ring 26 and the fixing plate 9 to approach or separate from each other.

[0067] The second connecting rod 25 includes a second fixing rod 28, a third fixing rod 31, a smooth rod, and a second compression spring 37. Among them, one end of the second fixing rod 28 is hinged to the mounting seat 27, and the other end of the second fixing rod 28 is provided with a second blind hole 29, and the side wall is provided with a second chute 30, and the second chute 30 communicates with the second blind hole 29; one end of the third fixing rod 31 is hinged to the sliding ring 26, and the other end of the third fixing rod 31 is fixedly connected with a sliding rod 32, and the sliding rod 32 is slidably connected to the second blind hole 29. The end of the sliding rod 32 away from the third fixing rod 31 is vertically and fixedly connected with a second sliding rod 33, and the second sliding rod 33 is slidably connected to the second chute 30; the second compression spring 37 is sleeved on the periphery of the sliding rod 32, and both ends of the second compression spring 37 are respectively connected to the other end of the second fixing rod 28 and the other end of the third fixing rod 31.

[0068] The driving member includes: a screw rod 34 with one end fixedly connected to the fixed seat. The other end of the screw rod 34 passes through the sliding ring 26 and is threadedly connected with a second nut 35. By adjusting the position of the second nut 35 on the screw rod 34, the distance between the fixed seat and the sliding ring 26 can be realized, so as to realize the adjustment process of the distance between the mounting seat 27 and the support frame 1.

[0069] The above parts work together, enabling the device to move freely in the pipeline and perform efficient dredging operations.

[0070] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0071] The embodiments described above are only descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A municipal water supply and drainage dredging device, characterized in that, Comprising: A support frame (1); A plurality of walking wheel sets circumferentially arrayed on the support frame (1); A power assembly installed on the support frame (1), an output end of the power assembly is connected with a plurality of telescopic rods, the telescopic rods are located on the circumferential side of the support frame (1), and one end of each telescopic rod far from the support frame (1) is fixedly connected with a dredging assembly respectively, the power assembly is used for driving the telescopic rods to make a circular motion around the support frame (1), and the dredging assembly is used for dredging the inner wall of the pipeline; A control unit electrically connected to the walking wheel sets and the power assembly respectively; and A power supply electrically connected to the control unit.

2. The municipal water supply and drainage dredging device according to claim 1, characterized in that, The telescopic rod includes: A first fixed rod (2) fixedly connected to the output end of the power assembly; A first movable rod (3) slidably inserted into the first fixed rod (2), and one end of the first movable rod (3) far from the first fixed rod (2) is fixedly connected with the dredging assembly; And an elastic member with two ends respectively connected to the first fixed rod (2) and the first movable rod (3), the elastic member is used for driving the first fixed rod (2) and the first movable rod (3) to move away from each other.

3. The municipal water supply and drainage dredging device according to claim 2, wherein One end of the first fixed rod (2) far from the power assembly is provided with a first blind hole (4), and a first sliding groove (5) is arranged on its side wall, the first sliding groove (5) is arranged along the length direction of the first fixed rod (2), and the first sliding groove (5) is communicated with the first blind hole (4); One end of the first movable rod (3) close to the power assembly is slidably connected to the first blind hole (4), and a first sliding rod (6) is perpendicularly and fixedly connected thereto, and the first sliding rod (6) is slidably connected to the first sliding groove (5); The elastic member is a first compression spring (7), the first compression spring (7) is arranged in the first blind hole (4), and is used for driving the first movable rod (3) to slide towards the end far from the power assembly.

4. The municipal water supply and drainage dredging device according to claim 3, wherein, A movable plate (8) is slidably connected in the first blind hole (4), and the movable plate (8) and the first movable rod (3) are respectively connected to two ends of the first compression spring (7); There are two first sliding grooves (5), two ends of the movable plate (8) extend towards opposite directions respectively and respectively penetrate through the two first sliding grooves (5) to form two protruding parts, two fixing plates (9) are fixedly connected to the side wall of the first fixed rod (2), the two fixing plates (9) are located on the side of the first sliding groove (5) far from the first movable rod (3), and the two fixing plates (9) and the two protruding parts are arranged in one-to-one correspondence, one end of the protruding part close to the fixing plate (9) is fixedly connected with the head of a bolt (10), the rod part of the bolt (10) penetrates through the fixing plate (9) and is connected with two first nuts (11), and the two first nuts (11) are respectively located on both sides of the fixing plate (9).

5. The municipal water supply and drainage dredging device according to claim 4, characterized in that, The dredging assembly includes: a silt-clearing plate (12) fixedly connected to one end of the first movable rod (3) away from the assembly, wherein the end surface of the silt-clearing plate (12) away from the first movable rod (3) is an arc surface; and A cleaning brush (13) is fixedly connected to the arc surface.

6. The municipal water supply and drainage dredging device according to claim 5, wherein, The power assembly comprises: a drive motor (14) fixedly connected to one end of the support frame (1), the drive motor (14) being electrically connected to a control unit; and a planetary gear (18), comprising a sun gear (15), a ring gear (16) and a planet carrier (17); the sun gear (15) is connected to the output shaft of the drive motor (14) in a power manner; the circumferential side of the ring gear (16) is fixedly connected to the first fixed rod (2); the planet carrier (17) is provided with a planetary gear (18); the planetary gear (18) is meshed with the sun gear (15) and the ring gear (16) respectively; One end of the support frame (1) is fixedly connected to a protective shell (19) via a connecting column (36), and the protective shell (19) is fixedly connected to the planet carrier (17).

7. The municipal water supply and drainage dredging device according to claim 6, characterized in that, Also includes: A camera (20) is installed on the protective shell (19), and the camera (20) is electrically connected to the control unit.

8. The municipal water supply and drainage dredging device according to claim 1, characterized in that, The walking wheel set comprises: A walking bracket, one end of the walking bracket being connected to the outer side wall of the support frame (1), and the other end of the walking bracket being rotatably connected to a plurality of walking wheels (21), the walking wheels (21) being used for frictionally connecting to the inner wall of the pipeline; and A travel motor (22) is used for driving the travel wheel (21) to rotate, and the travel motor (22) is electrically connected to a control unit.

9. The municipal water supply and drainage dredging device according to claim 1, characterized in that, The walking support comprises: Two groups of first connecting rods (23) are spaced apart and arranged in parallel along the length direction of the support frame (1), one end of the first connecting rod (23) is hinged with a fixing block (24), and the fixing block (24) is fixedly connected to the outer side wall of the support frame (1); a second connecting rod (25) arranged crosswise with the first connecting rod (23), one end of the second connecting rod (25) being hingedly connected with a sliding ring (26), the sliding ring (26) being slidably connected with the support frame (1) along the length direction of the support frame (1); A mounting seat (27) hinged to the other end of the first connecting rod (23) and the other end of the second connecting rod (25), respectively, a plurality of running wheels (21) are rotatably connected to the mounting seat (27), the running motor (22) is fixedly connected to the mounting seat (27), and the running motor (22) is drivingly connected to at least one of the running wheels (21); And a driving member for driving the sliding ring (26) and the fixed plate (9) to move closer to or farther from each other.

10. The municipal water supply and drainage dredging device according to claim 9, characterized in that, The second connecting rod (25) comprises: a second fixing rod (28) having one end hinged to the mounting seat (27), the other end of the second fixing rod (28) being provided with a second blind hole (29), and the side wall being provided with a second slide groove (30), the second slide groove (30) being arranged along the length direction of the second fixing rod (28), and the second slide groove (30) being communicated with the second blind hole (29); A third fixed rod (31) with one end hinged to the sliding ring (26), a sliding rod (32) is fixedly connected to the other end of the third fixed rod (31), the sliding rod (32) is slidably connected to the second blind hole (29), a second sliding rod (33) is perpendicularly fixedly connected to the end of the sliding rod (32) away from the third fixed rod (31), and the second sliding rod (33) is slidably connected to the second sliding groove (30); A second compression spring (37) sleeved on the circumferential side of the sliding rod (32), and both ends of the second compression spring (37) are respectively connected to the other end of the second fixed rod (28) and the other end of the third fixed rod (31); The driving member includes: a screw rod (34) with one end fixedly connected to the fixed seat, and the other end of the screw rod (34) passes through the sliding ring (26) and is threadedly connected with a second nut (35).

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